--- a/langtools/src/share/classes/com/sun/tools/javadoc/PackageDocImpl.java	Thu Apr 18 19:58:45 2013 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javadoc/PackageDocImpl.java	Thu Apr 18 20:00:14 2013 -0700
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -334,12 +334,17 @@
      * Get package name.
      */
     public String qualifiedName() {
-        Name fullname = sym.getQualifiedName();
-        // Some bogus tests depend on the interned "" being returned.
-        // See 6457276.
-        return fullname.isEmpty() ? "" : fullname.toString();
+        if (qualifiedName == null) {
+            Name fullname = sym.getQualifiedName();
+            // Some bogus tests depend on the interned "" being returned.
+            // See 6457276.
+            qualifiedName = fullname.isEmpty() ? "" : fullname.toString();
+        }
+        return qualifiedName;
     }
 
+    private String qualifiedName;
+
     /**
      * set doc path for an unzipped directory
      */